Not quite a Backblaze but 1/10th the cost at $599 obo: Chenbro 48 Bay Top Loader 4U Chassis w/Rail Kit+Drive Brackets COMPLETE SYSTEM!
It looks like the chassis even has 2x 2.5" hot swap bays in the rear of the chassis and spots for 2 more drives (maybe 2.5"?) internally. I would likely be tempted to replace fans/ that motherboard but it is a really interesting option.
The big question is what kind of SAS expander the unit is using. SAS2 and it would be really intriguing. You can see the LSI card is connected via two SFF-8087 connectors.
2 of 10 sold, maybe someone on here has experiences with them.
It looks like the chassis even has 2x 2.5" hot swap bays in the rear of the chassis and spots for 2 more drives (maybe 2.5"?) internally. I would likely be tempted to replace fans/ that motherboard but it is a really interesting option.
The big question is what kind of SAS expander the unit is using. SAS2 and it would be really intriguing. You can see the LSI card is connected via two SFF-8087 connectors.
2 of 10 sold, maybe someone on here has experiences with them.